The mystery of the disappearing cyanosis
All that’s blue . . .
I was working as an emergency duty doctor in a hospital, when, on one seemingly peaceful night, I received a call about one of the patients. I walked up to the ward and saw an anxious looking nurse, who muttered to me, “Hurry up doctor, the patient in that room is turning blue.” I began to worry because this could be an emergency, and I would have to act fast. I hurried into the room and found the patient sitting on the bed, apprehensive as to what was happening. I began to check the important vital parameters. They all seemed normal. As I examined the patient’s hands I noticed that the fingers, nails, and palms were blue. The patient had no difficulty in breathing, and did not have a relevant history.
The oral cavity, tongue, and lips were completely pink and so was the conjunctiva. I was perplexed and asked